JPS6422682U - - Google Patents
Info
- Publication number
- JPS6422682U JPS6422682U JP11788087U JP11788087U JPS6422682U JP S6422682 U JPS6422682 U JP S6422682U JP 11788087 U JP11788087 U JP 11788087U JP 11788087 U JP11788087 U JP 11788087U JP S6422682 U JPS6422682 U JP S6422682U
- Authority
- JP
- Japan
- Prior art keywords
- pilot pressure
- pump
- control valve
- hydraulic
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 3
Landscapes
- Road Paving Machines (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
第１図は本考案の一実施例による装軌式車輌の
走行油圧制御回路を示す回路図であり、第２図は
同走行油圧制御回路におけるパイロツトバルブと
制御弁及びそれらの操作レバーの運転パネル上で
の配置図であり、第３図は同走行油圧制御回路を
適用した装軌式車輌の走行動作図であり、第４図
は装軌式アスフアルトフイニツシヤの概略側面図
であり、第５図は従来の装軌式アスフアルトフイ
ニツシヤの走行油圧制御回路を示す回路図であり
、第６図は同走行油圧制御回路における２つのパ
イロツトバルブ及びそれらの操作レバーの運転パ
ネル上での配置図であり、第７図は同操作レバー
の動作図である。
符号の説明、９，１０……油圧ポンプ、１３，
１４……サーボシリンダ（ポンプレギユレータ）
、Ｙ１，Ｚ１，Ｙ２，Ｚ２……ポート、１９……
タンク、２１……走行油圧制御回路、２２……パ
イロツトバルブ、２３……制御弁、２４，２５…
…操作レバー、２６，３２……パイロツト圧力ラ
イン。
FIG. 1 is a circuit diagram showing a traveling hydraulic pressure control circuit for a tracked vehicle according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a pilot valve, a control valve, and an operating panel for their operating levers in the traveling hydraulic pressure control circuit. Fig. 3 is a running operation diagram of a tracked vehicle to which the same traveling hydraulic control circuit is applied, Fig. 4 is a schematic side view of a tracked asphalt finisher, and Fig. 5 is a schematic side view of a tracked asphalt finisher. The figure is a circuit diagram showing the travel hydraulic control circuit of a conventional tracked asphalt finisher, and Figure 6 is a layout diagram of the two pilot valves and their operating levers in the same travel hydraulic control circuit on the operation panel. 7 is an operational diagram of the same operating lever. Explanation of symbols, 9, 10...Hydraulic pump, 13,
14... Servo cylinder (pump regulator)
, Y1, Z1, Y2, Z2... port, 19...
Tank, 21... Travel hydraulic control circuit, 22... Pilot valve, 23... Control valve, 24, 25...
...Operation lever, 26, 32...Pilot pressure line.
Claims (1)
及び第２の油圧ポンプの吐出量を、第１及び第２
のポンプレギユレータを制御することにより油圧
パイロツト制御し、走行動作の制御を行う装軌式
車輌の走行油圧制御回路において、 第１の操作レバーの動作ストロークに応じたパ
イロツト圧力を発生する第１の制御弁を第１及び
第２のポンプレギユレータにパイロツト圧力ライ
ンを介して接続し、そのパイロツト圧力ライン及
びタンクと第１及び第２のポンプレギユレータと
の間に、第２の操作レバーの動作方向に応じてそ
れらの接続を選択的に切換えると共に、第２の操
作レバーの動作ストロークに応じたパイロツト圧
力を発生する第２の制御弁を接続し、第１の制御
弁のパイロツト圧力を第１及び第２のポンプレギ
ユレータの一方のポートに共通のパイロツト圧力
として導くと共に、第２の制御弁のパイロツト圧
力を一方のポンプレギユレータの他方のポートに
導き、他方のポンプレギユレータの他方のポート
を第２の制御弁を介してタンクに連通させ、それ
ぞれのポンプレギユレータ内においてそれら圧力
の差に対応する有効パイロツト圧力を得るように
したことを特徴とする装軌式車輌の走行油圧制御
回路。[Claims for Utility Model Registration]
and the discharge amount of the second hydraulic pump to the first and second hydraulic pumps.
In a travel hydraulic control circuit for a tracked vehicle, which performs hydraulic pilot control by controlling a pump regulator of a tracked vehicle, the travel operation of the vehicle is controlled by controlling a pump regulator of the first control lever. a control valve connected to the first and second pump regulators via a pilot pressure line and between the pilot pressure line and the tank and the first and second pump regulators; A second control valve is connected which selectively switches the connection according to the operating direction of the lever and generates a pilot pressure according to the operating stroke of the second operating lever, and the pilot pressure of the first control valve is connected. is led to one port of the first and second pump regulators as a common pilot pressure, and the pilot pressure of the second control valve is led to the other port of one pump regulator, and the pilot pressure of the second control valve is led to the other port of the other pump regulator. A track system characterized in that the other port of the pump regulator is communicated with a tank via a second control valve, and an effective pilot pressure corresponding to the difference in pressure is obtained within each pump regulator. Hydraulic control circuit for driving vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11788087U JPH0351263Y2 (en) | 1987-07-31 | 1987-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11788087U JPH0351263Y2 (en) | 1987-07-31 | 1987-07-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6422682U true JPS6422682U (en) | 1989-02-06 |
| JPH0351263Y2 JPH0351263Y2 (en) | 1991-11-01 |
Family
ID=31361729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11788087U Expired JPH0351263Y2 (en) | 1987-07-31 | 1987-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351263Y2 (en) |
-
1987
- 1987-07-31 JP JP11788087U patent/JPH0351263Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0351263Y2 (en) | 1991-11-01 |
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